1.

Consider the following statements (I) La(OH)_(3) is the least basic among hydroxides of lanthanides (II) Zr^(4+) and Hf^(4+) posses almost the same ionic radii (III) Ce^(4+) can act as an oxidizing agent Which of the above is/are true

Answer»

(I) and (III)
(II) and (III)
(II) only
(I) and (II)

Solution :`Zr^(4+) and Hf^(4+)` POSSESS almost the same ionic radii due to lanthanide contraction and `Ce^(4+)` is an oxidizing agent. `LA(OH)_(3)` is the most basic among lanthanide hydroxides.


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